The Disk,valve, cataloged under National Stock Number 4820-01-048-7647, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mission Systems Orchard Park Inc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-048-7647 |
| Primary Part Number | B13656-1 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mission Systems Orchard Park Inc |
| Status | ACTIVE |
| Shank Diameter | 0.778 INCHES NOMINAL IN |
| Flange Diameter | 0.558 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2432-0012-1 | Mission Systems Orchard Park Inc (USA) |
| B13656-1 PRIMARY | Mission Systems Orchard Park Inc (USA) |
| Reference | Meaning |
|---|---|
| 2432-0012 | 5/9 Secondary reference Mission Systems Orchard Park Inc |
| 2432-0012-PC1 | 5/9 Secondary reference Mission Systems Orchard Park Inc |
| 2432-0012-PC1 | 5/9 Secondary reference Carleton Technologies Inc Div Tampa Facility |
| 2432-0012-1 | 3/9 Design control — primary reference Carleton Technologies Inc Div Tampa Facility |
NSN 4820-01-048-7647 is a Disk,valve, manufactured by Mission Systems Orchard Park Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-048-7647 has 2 manufacturer part numbers on file: 2432-0012-1 (Mission Systems Orchard Park Inc), B13656-1 (Mission Systems Orchard Park Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-060-4006, 4820-01-633-4721. Verify interchangeability with system specifications before substitution.
Key specifications for B13656-1: Shank Diameter: 0.778 INCHES NOMINAL IN; Flange Diameter: 0.558 INCHES NOMINAL IN; Overall Height: 1.625 INCHES NOMINAL IN; Style Designator: POPPET. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4820-01-048-7647 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.